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backend-async-tasks

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Actualizado15 de enero de 2026 a las 22:25

Use when creating or updating Celery tasks, async job logic, or Beat schedules in the backend.

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lmiguelvargasf

lmiguelvargasf/nova

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SKILL.md

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name	backend-async-tasks
description	Use when creating or updating Celery tasks, async job logic, or Beat schedules in the backend.

Backend async tasks (Celery)

When to use

You are adding or changing a Celery task in backend/src/backend/apps/**/tasks.py.
You need to update the Celery Beat schedule in backend/src/backend/celery_app.py.
You are adding DB access inside a Celery worker process.

Steps

Define tasks only in a tasks.py file under the relevant app module.
Decorate tasks with @app.task imported from backend.celery_app.
Return a typed result (int, None, etc.). Keep task-specific parameters local unless they must be environment-configured.
For DB access:
- Use asyncio.run() to bridge async work.
- Always acquire a session via get_task_session() from backend.celery_app.
For periodic jobs, update app.conf.beat_schedule in backend/src/backend/celery_app.py and use celery.schedules.crontab.

Constraints and guardrails

Never use the global alchemy_config engine inside a task; it is not fork-safe for Celery workers.
Always use get_task_session() to manage DB connections safely across worker processes.

References

backend/src/backend/apps/**/tasks.py
backend/src/backend/celery_app.py
backend/tests/apps/users/test_tasks.py

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name	backend-async-tasks
description	Use when creating or updating Celery tasks, async job logic, or Beat schedules in the backend.

Backend async tasks (Celery)

When to use

You are adding or changing a Celery task in backend/src/backend/apps/**/tasks.py.
You need to update the Celery Beat schedule in backend/src/backend/celery_app.py.
You are adding DB access inside a Celery worker process.

Steps

Define tasks only in a tasks.py file under the relevant app module.
Decorate tasks with @app.task imported from backend.celery_app.
Return a typed result (int, None, etc.). Keep task-specific parameters local unless they must be environment-configured.
For DB access:
- Use asyncio.run() to bridge async work.
- Always acquire a session via get_task_session() from backend.celery_app.
For periodic jobs, update app.conf.beat_schedule in backend/src/backend/celery_app.py and use celery.schedules.crontab.

Constraints and guardrails

Never use the global alchemy_config engine inside a task; it is not fork-safe for Celery workers.
Always use get_task_session() to manage DB connections safely across worker processes.

References

backend/src/backend/apps/**/tasks.py
backend/src/backend/celery_app.py
backend/tests/apps/users/test_tasks.py